Cha Chi-soo (Jeong Il woo) is the only son for a family that owns Korea's largest food conglomerate named Chasung. Chi-soo comes back from New York without telling his father. When he arrives there he is followed by people who work for his father. Chi-soo rush to the restroom and bump-in to Yang Eun-bi (Lee Chung ah). Eun-bi attends the university festival and she met the guy from the bathroom again. Eun-bi assumes Chi-soo is a student at her university. On the same day, she found her boyfriend betrayed her and humiliated her in front of her schoolmate. From then on, Eun-bi decides to focus on becoming a teacher and meeting a good guy. That is where the story began…